drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2010 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8
   9 #include <linux/delay.h>
  10 #include <linux/slab.h>
  11 #include <scsi/scsi_tcq.h>
  12 #include <scsi/scsi_bsg_fc.h>
  13 #include <scsi/scsi_eh.h>
  14
  15 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  16 static void qla2x00_process_completed_request(struct scsi_qla_host *,
  17         struct req_que *, uint32_t);
  18 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  19 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  20 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  21         sts_entry_t *);
  22
  23 /**
  24  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  25  * @irq:
  26  * @dev_id: SCSI driver HA context
  27  *
  28  * Called by system whenever the host adapter generates an interrupt.
  29  *
  30  * Returns handled flag.
  31  */
  32 irqreturn_t
  33 qla2100_intr_handler(int irq, void *dev_id)
  34 {
  35         scsi_qla_host_t *vha;
  36         struct qla_hw_data *ha;
  37         struct device_reg_2xxx __iomem *reg;
  38         int             status;
  39         unsigned long   iter;
  40         uint16_t        hccr;
  41         uint16_t        mb[4];
  42         struct rsp_que *rsp;
  43         unsigned long   flags;
  44
  45         rsp = (struct rsp_que *) dev_id;
  46         if (!rsp) {
  47                 printk(KERN_INFO
  48                     "%s(): NULL response queue pointer\n", __func__);
  49                 return (IRQ_NONE);
  50         }
  51
  52         ha = rsp->hw;
  53         reg = &ha->iobase->isp;
  54         status = 0;
  55
  56         spin_lock_irqsave(&ha->hardware_lock, flags);
  57         vha = pci_get_drvdata(ha->pdev);
  58         for (iter = 50; iter--; ) {
  59                 hccr = RD_REG_WORD(&reg->hccr);
  60                 if (hccr & HCCR_RISC_PAUSE) {
  61                         if (pci_channel_offline(ha->pdev))
  62                                 break;
  63
  64                         /*
  65                          * Issue a "HARD" reset in order for the RISC interrupt
  66                          * bit to be cleared.  Schedule a big hammmer to get
  67                          * out of the RISC PAUSED state.
  68                          */
  69                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  70                         RD_REG_WORD(&reg->hccr);
  71
  72                         ha->isp_ops->fw_dump(vha, 1);
  73                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  74                         break;
  75                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  76                         break;
  77
  78                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  79                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  80                         RD_REG_WORD(&reg->hccr);
  81
  82                         /* Get mailbox data. */
  83                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  84                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  85                                 qla2x00_mbx_completion(vha, mb[0]);
  86                                 status |= MBX_INTERRUPT;
  87                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  88                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  89                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  90                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  91                                 qla2x00_async_event(vha, rsp, mb);
  92                         } else {
  93                                 /*EMPTY*/
  94                                 DEBUG2(printk("scsi(%ld): Unrecognized "
  95                                     "interrupt type (%d).\n",
  96                                     vha->host_no, mb[0]));
  97                         }
  98                         /* Release mailbox registers. */
  99                         WRT_REG_WORD(&reg->semaphore, 0);
 100                         RD_REG_WORD(&reg->semaphore);
 101                 } else {
 102                         qla2x00_process_response_queue(rsp);
 103
 104                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 105                         RD_REG_WORD(&reg->hccr);
 106                 }
 107         }
 108         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 109
 110         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 111             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 112                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 113                 complete(&ha->mbx_intr_comp);
 114         }
 115
 116         return (IRQ_HANDLED);
 117 }
 118
 119 /**
 120  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 121  * @irq:
 122  * @dev_id: SCSI driver HA context
 123  *
 124  * Called by system whenever the host adapter generates an interrupt.
 125  *
 126  * Returns handled flag.
 127  */
 128 irqreturn_t
 129 qla2300_intr_handler(int irq, void *dev_id)
 130 {
 131         scsi_qla_host_t *vha;
 132         struct device_reg_2xxx __iomem *reg;
 133         int             status;
 134         unsigned long   iter;
 135         uint32_t        stat;
 136         uint16_t        hccr;
 137         uint16_t        mb[4];
 138         struct rsp_que *rsp;
 139         struct qla_hw_data *ha;
 140         unsigned long   flags;
 141
 142         rsp = (struct rsp_que *) dev_id;
 143         if (!rsp) {
 144                 printk(KERN_INFO
 145                     "%s(): NULL response queue pointer\n", __func__);
 146                 return (IRQ_NONE);
 147         }
 148
 149         ha = rsp->hw;
 150         reg = &ha->iobase->isp;
 151         status = 0;
 152
 153         spin_lock_irqsave(&ha->hardware_lock, flags);
 154         vha = pci_get_drvdata(ha->pdev);
 155         for (iter = 50; iter--; ) {
 156                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 157                 if (stat & HSR_RISC_PAUSED) {
 158                         if (unlikely(pci_channel_offline(ha->pdev)))
 159                                 break;
 160
 161                         hccr = RD_REG_WORD(&reg->hccr);
 162                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 163                                 qla_printk(KERN_INFO, ha, "Parity error -- "
 164                                     "HCCR=%x, Dumping firmware!\n", hccr);
 165                         else
 166                                 qla_printk(KERN_INFO, ha, "RISC paused -- "
 167                                     "HCCR=%x, Dumping firmware!\n", hccr);
 168
 169                         /*
 170                          * Issue a "HARD" reset in order for the RISC
 171                          * interrupt bit to be cleared.  Schedule a big
 172                          * hammmer to get out of the RISC PAUSED state.
 173                          */
 174                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 175                         RD_REG_WORD(&reg->hccr);
 176
 177                         ha->isp_ops->fw_dump(vha, 1);
 178                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 179                         break;
 180                 } else if ((stat & HSR_RISC_INT) == 0)
 181                         break;
 182
 183                 switch (stat & 0xff) {
 184                 case 0x1:
 185                 case 0x2:
 186                 case 0x10:
 187                 case 0x11:
 188                         qla2x00_mbx_completion(vha, MSW(stat));
 189                         status |= MBX_INTERRUPT;
 190
 191                         /* Release mailbox registers. */
 192                         WRT_REG_WORD(&reg->semaphore, 0);
 193                         break;
 194                 case 0x12:
 195                         mb[0] = MSW(stat);
 196                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 197                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 198                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 199                         qla2x00_async_event(vha, rsp, mb);
 200                         break;
 201                 case 0x13:
 202                         qla2x00_process_response_queue(rsp);
 203                         break;
 204                 case 0x15:
 205                         mb[0] = MBA_CMPLT_1_16BIT;
 206                         mb[1] = MSW(stat);
 207                         qla2x00_async_event(vha, rsp, mb);
 208                         break;
 209                 case 0x16:
 210                         mb[0] = MBA_SCSI_COMPLETION;
 211                         mb[1] = MSW(stat);
 212                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 213                         qla2x00_async_event(vha, rsp, mb);
 214                         break;
 215                 default:
 216                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
 217                             "(%d).\n",
 218                             vha->host_no, stat & 0xff));
 219                         break;
 220                 }
 221                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 222                 RD_REG_WORD_RELAXED(&reg->hccr);
 223         }
 224         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 225
 226         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 227             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 228                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 229                 complete(&ha->mbx_intr_comp);
 230         }
 231
 232         return (IRQ_HANDLED);
 233 }
 234
 235 /**
 236  * qla2x00_mbx_completion() - Process mailbox command completions.
 237  * @ha: SCSI driver HA context
 238  * @mb0: Mailbox0 register
 239  */
 240 static void
 241 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 242 {
 243         uint16_t        cnt;
 244         uint16_t __iomem *wptr;
 245         struct qla_hw_data *ha = vha->hw;
 246         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 247
 248         /* Load return mailbox registers. */
 249         ha->flags.mbox_int = 1;
 250         ha->mailbox_out[0] = mb0;
 251         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 252
 253         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 254                 if (IS_QLA2200(ha) && cnt == 8)
 255                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 256                 if (cnt == 4 || cnt == 5)
 257                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 258                 else
 259                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 260
 261                 wptr++;
 262         }
 263
 264         if (ha->mcp) {
 265                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
 266                     __func__, vha->host_no, ha->mcp->mb[0]));
 267         } else {
 268                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
 269                     __func__, vha->host_no));
 270         }
 271 }
 272
 273 static void
 274 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 275 {
 276         static char *event[] =
 277                 { "Complete", "Request Notification", "Time Extension" };
 278         int rval;
 279         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 280         uint16_t __iomem *wptr;
 281         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 282
 283         /* Seed data -- mailbox1 -> mailbox7. */
 284         wptr = (uint16_t __iomem *)&reg24->mailbox1;
 285         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 286                 mb[cnt] = RD_REG_WORD(wptr);
 287
 288         DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
 289             "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
 290             event[aen & 0xff],
 291             mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
 292
 293         /* Acknowledgement needed? [Notify && non-zero timeout]. */
 294         timeout = (descr >> 8) & 0xf;
 295         if (aen != MBA_IDC_NOTIFY || !timeout)
 296                 return;
 297
 298         DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
 299             "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
 300
 301         rval = qla2x00_post_idc_ack_work(vha, mb);
 302         if (rval != QLA_SUCCESS)
 303                 qla_printk(KERN_WARNING, vha->hw,
 304                     "IDC failed to post ACK.\n");
 305 }
 306
 307 /**
 308  * qla2x00_async_event() - Process aynchronous events.
 309  * @ha: SCSI driver HA context
 310  * @mb: Mailbox registers (0 - 3)
 311  */
 312 void
 313 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 314 {
 315 #define LS_UNKNOWN      2
 316         static char     *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
 317         char            *link_speed;
 318         uint16_t        handle_cnt;
 319         uint16_t        cnt, mbx;
 320         uint32_t        handles[5];
 321         struct qla_hw_data *ha = vha->hw;
 322         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 323         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 324         uint32_t        rscn_entry, host_pid;
 325         uint8_t         rscn_queue_index;
 326         unsigned long   flags;
 327
 328         /* Setup to process RIO completion. */
 329         handle_cnt = 0;
 330         if (IS_QLA8XXX_TYPE(ha))
 331                 goto skip_rio;
 332         switch (mb[0]) {
 333         case MBA_SCSI_COMPLETION:
 334                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 335                 handle_cnt = 1;
 336                 break;
 337         case MBA_CMPLT_1_16BIT:
 338                 handles[0] = mb[1];
 339                 handle_cnt = 1;
 340                 mb[0] = MBA_SCSI_COMPLETION;
 341                 break;
 342         case MBA_CMPLT_2_16BIT:
 343                 handles[0] = mb[1];
 344                 handles[1] = mb[2];
 345                 handle_cnt = 2;
 346                 mb[0] = MBA_SCSI_COMPLETION;
 347                 break;
 348         case MBA_CMPLT_3_16BIT:
 349                 handles[0] = mb[1];
 350                 handles[1] = mb[2];
 351                 handles[2] = mb[3];
 352                 handle_cnt = 3;
 353                 mb[0] = MBA_SCSI_COMPLETION;
 354                 break;
 355         case MBA_CMPLT_4_16BIT:
 356                 handles[0] = mb[1];
 357                 handles[1] = mb[2];
 358                 handles[2] = mb[3];
 359                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 360                 handle_cnt = 4;
 361                 mb[0] = MBA_SCSI_COMPLETION;
 362                 break;
 363         case MBA_CMPLT_5_16BIT:
 364                 handles[0] = mb[1];
 365                 handles[1] = mb[2];
 366                 handles[2] = mb[3];
 367                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 368                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 369                 handle_cnt = 5;
 370                 mb[0] = MBA_SCSI_COMPLETION;
 371                 break;
 372         case MBA_CMPLT_2_32BIT:
 373                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 374                 handles[1] = le32_to_cpu(
 375                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 376                     RD_MAILBOX_REG(ha, reg, 6));
 377                 handle_cnt = 2;
 378                 mb[0] = MBA_SCSI_COMPLETION;
 379                 break;
 380         default:
 381                 break;
 382         }
 383 skip_rio:
 384         switch (mb[0]) {
 385         case MBA_SCSI_COMPLETION:       /* Fast Post */
 386                 if (!vha->flags.online)
 387                         break;
 388
 389                 for (cnt = 0; cnt < handle_cnt; cnt++)
 390                         qla2x00_process_completed_request(vha, rsp->req,
 391                                 handles[cnt]);
 392                 break;
 393
 394         case MBA_RESET:                 /* Reset */
 395                 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
 396                         vha->host_no));
 397
 398                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 399                 break;
 400
 401         case MBA_SYSTEM_ERR:            /* System Error */
 402                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
 403                 qla_printk(KERN_INFO, ha,
 404                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 405                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 406
 407                 ha->isp_ops->fw_dump(vha, 1);
 408
 409                 if (IS_FWI2_CAPABLE(ha)) {
 410                         if (mb[1] == 0 && mb[2] == 0) {
 411                                 qla_printk(KERN_ERR, ha,
 412                                     "Unrecoverable Hardware Error: adapter "
 413                                     "marked OFFLINE!\n");
 414                                 vha->flags.online = 0;
 415                         } else {
 416                                 /* Check to see if MPI timeout occured */
 417                                 if ((mbx & MBX_3) && (ha->flags.port0))
 418                                         set_bit(MPI_RESET_NEEDED,
 419                                             &vha->dpc_flags);
 420
 421                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 422                         }
 423                 } else if (mb[1] == 0) {
 424                         qla_printk(KERN_INFO, ha,
 425                             "Unrecoverable Hardware Error: adapter marked "
 426                             "OFFLINE!\n");
 427                         vha->flags.online = 0;
 428                 } else
 429                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 430                 break;
 431
 432         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 433                 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
 434                     vha->host_no, mb[1]));
 435                 qla_printk(KERN_WARNING, ha,
 436                     "ISP Request Transfer Error (%x).\n", mb[1]);
 437
 438                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 439                 break;
 440
 441         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 442                 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
 443                     vha->host_no));
 444                 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
 445
 446                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 447                 break;
 448
 449         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 450                 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
 451                     vha->host_no));
 452                 break;
 453
 454         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 455                 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
 456                     mb[1]));
 457                 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
 458
 459                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 460                         atomic_set(&vha->loop_state, LOOP_DOWN);
 461                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 462                         qla2x00_mark_all_devices_lost(vha, 1);
 463                 }
 464
 465                 if (vha->vp_idx) {
 466                         atomic_set(&vha->vp_state, VP_FAILED);
 467                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 468                 }
 469
 470                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 471                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 472
 473                 vha->flags.management_server_logged_in = 0;
 474                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 475                 break;
 476
 477         case MBA_LOOP_UP:               /* Loop Up Event */
 478                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
 479                         link_speed = link_speeds[0];
 480                         ha->link_data_rate = PORT_SPEED_1GB;
 481                 } else {
 482                         link_speed = link_speeds[LS_UNKNOWN];
 483                         if (mb[1] < 5)
 484                                 link_speed = link_speeds[mb[1]];
 485                         else if (mb[1] == 0x13)
 486                                 link_speed = link_speeds[5];
 487                         ha->link_data_rate = mb[1];
 488                 }
 489
 490                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
 491                     vha->host_no, link_speed));
 492                 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
 493                     link_speed);
 494
 495                 vha->flags.management_server_logged_in = 0;
 496                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 497                 break;
 498
 499         case MBA_LOOP_DOWN:             /* Loop Down Event */
 500                 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
 501                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
 502                     "(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
 503                     mbx));
 504                 qla_printk(KERN_INFO, ha,
 505                     "LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
 506                     mbx);
 507
 508                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 509                         atomic_set(&vha->loop_state, LOOP_DOWN);
 510                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 511                         vha->device_flags |= DFLG_NO_CABLE;
 512                         qla2x00_mark_all_devices_lost(vha, 1);
 513                 }
 514
 515                 if (vha->vp_idx) {
 516                         atomic_set(&vha->vp_state, VP_FAILED);
 517                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 518                 }
 519
 520                 vha->flags.management_server_logged_in = 0;
 521                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 522                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 523                 break;
 524
 525         case MBA_LIP_RESET:             /* LIP reset occurred */
 526                 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
 527                     vha->host_no, mb[1]));
 528                 qla_printk(KERN_INFO, ha,
 529                     "LIP reset occurred (%x).\n", mb[1]);
 530
 531                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 532                         atomic_set(&vha->loop_state, LOOP_DOWN);
 533                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 534                         qla2x00_mark_all_devices_lost(vha, 1);
 535                 }
 536
 537                 if (vha->vp_idx) {
 538                         atomic_set(&vha->vp_state, VP_FAILED);
 539                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 540                 }
 541
 542                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 543
 544                 ha->operating_mode = LOOP;
 545                 vha->flags.management_server_logged_in = 0;
 546                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 547                 break;
 548
 549         /* case MBA_DCBX_COMPLETE: */
 550         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 551                 if (IS_QLA2100(ha))
 552                         break;
 553
 554                 if (IS_QLA8XXX_TYPE(ha)) {
 555                         DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
 556                             "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 557                         if (ha->notify_dcbx_comp)
 558                                 complete(&ha->dcbx_comp);
 559
 560                 } else
 561                         DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
 562                             "received.\n", vha->host_no));
 563
 564                 /*
 565                  * Until there's a transition from loop down to loop up, treat
 566                  * this as loop down only.
 567                  */
 568                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 569                         atomic_set(&vha->loop_state, LOOP_DOWN);
 570                         if (!atomic_read(&vha->loop_down_timer))
 571                                 atomic_set(&vha->loop_down_timer,
 572                                     LOOP_DOWN_TIME);
 573                         qla2x00_mark_all_devices_lost(vha, 1);
 574                 }
 575
 576                 if (vha->vp_idx) {
 577                         atomic_set(&vha->vp_state, VP_FAILED);
 578                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 579                 }
 580
 581                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 582                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 583
 584                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 585                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 586
 587                 ha->flags.gpsc_supported = 1;
 588                 vha->flags.management_server_logged_in = 0;
 589                 break;
 590
 591         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 592                 if (IS_QLA2100(ha))
 593                         break;
 594
 595                 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
 596                     "received.\n",
 597                     vha->host_no));
 598                 qla_printk(KERN_INFO, ha,
 599                     "Configuration change detected: value=%x.\n", mb[1]);
 600
 601                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 602                         atomic_set(&vha->loop_state, LOOP_DOWN);
 603                         if (!atomic_read(&vha->loop_down_timer))
 604                                 atomic_set(&vha->loop_down_timer,
 605                                     LOOP_DOWN_TIME);
 606                         qla2x00_mark_all_devices_lost(vha, 1);
 607                 }
 608
 609                 if (vha->vp_idx) {
 610                         atomic_set(&vha->vp_state, VP_FAILED);
 611                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 612                 }
 613
 614                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 615                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 616                 break;
 617
 618         case MBA_PORT_UPDATE:           /* Port database update */
 619                 /*
 620                  * Handle only global and vn-port update events
 621                  *
 622                  * Relevant inputs:
 623                  * mb[1] = N_Port handle of changed port
 624                  * OR 0xffff for global event
 625                  * mb[2] = New login state
 626                  * 7 = Port logged out
 627                  * mb[3] = LSB is vp_idx, 0xff = all vps
 628                  *
 629                  * Skip processing if:
 630                  *       Event is global, vp_idx is NOT all vps,
 631                  *           vp_idx does not match
 632                  *       Event is not global, vp_idx does not match
 633                  */
 634                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 635                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 636                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 637                         break;
 638
 639                 /* Global event -- port logout or port unavailable. */
 640                 if (mb[1] == 0xffff && mb[2] == 0x7) {
 641                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 642                             vha->host_no));
 643                         DEBUG(printk(KERN_INFO
 644                             "scsi(%ld): Port unavailable %04x %04x %04x.\n",
 645                             vha->host_no, mb[1], mb[2], mb[3]));
 646
 647                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 648                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 649                                 atomic_set(&vha->loop_down_timer,
 650                                     LOOP_DOWN_TIME);
 651                                 vha->device_flags |= DFLG_NO_CABLE;
 652                                 qla2x00_mark_all_devices_lost(vha, 1);
 653                         }
 654
 655                         if (vha->vp_idx) {
 656                                 atomic_set(&vha->vp_state, VP_FAILED);
 657                                 fc_vport_set_state(vha->fc_vport,
 658                                     FC_VPORT_FAILED);
 659                                 qla2x00_mark_all_devices_lost(vha, 1);
 660                         }
 661
 662                         vha->flags.management_server_logged_in = 0;
 663                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 664                         break;
 665                 }
 666
 667                 /*
 668                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 669                  * event etc. earlier indicating loop is down) then process
 670                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 671                  */
 672                 atomic_set(&vha->loop_down_timer, 0);
 673                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
 674                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
 675                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
 676                             "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
 677                             mb[2], mb[3]));
 678                         break;
 679                 }
 680
 681                 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 682                     vha->host_no));
 683                 DEBUG(printk(KERN_INFO
 684                     "scsi(%ld): Port database changed %04x %04x %04x.\n",
 685                     vha->host_no, mb[1], mb[2], mb[3]));
 686
 687                 /*
 688                  * Mark all devices as missing so we will login again.
 689                  */
 690                 atomic_set(&vha->loop_state, LOOP_UP);
 691
 692                 qla2x00_mark_all_devices_lost(vha, 1);
 693
 694                 vha->flags.rscn_queue_overflow = 1;
 695
 696                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 697                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 698                 break;
 699
 700         case MBA_RSCN_UPDATE:           /* State Change Registration */
 701                 /* Check if the Vport has issued a SCR */
 702                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 703                         break;
 704                 /* Only handle SCNs for our Vport index. */
 705                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 706                         break;
 707
 708                 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
 709                     vha->host_no));
 710                 DEBUG(printk(KERN_INFO
 711                     "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
 712                     vha->host_no, mb[1], mb[2], mb[3]));
 713
 714                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
 715                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
 716                                 | vha->d_id.b.al_pa;
 717                 if (rscn_entry == host_pid) {
 718                         DEBUG(printk(KERN_INFO
 719                             "scsi(%ld): Ignoring RSCN update to local host "
 720                             "port ID (%06x)\n",
 721                             vha->host_no, host_pid));
 722                         break;
 723                 }
 724
 725                 /* Ignore reserved bits from RSCN-payload. */
 726                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
 727                 rscn_queue_index = vha->rscn_in_ptr + 1;
 728                 if (rscn_queue_index == MAX_RSCN_COUNT)
 729                         rscn_queue_index = 0;
 730                 if (rscn_queue_index != vha->rscn_out_ptr) {
 731                         vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
 732                         vha->rscn_in_ptr = rscn_queue_index;
 733                 } else {
 734                         vha->flags.rscn_queue_overflow = 1;
 735                 }
 736
 737                 atomic_set(&vha->loop_state, LOOP_UPDATE);
 738                 atomic_set(&vha->loop_down_timer, 0);
 739                 vha->flags.management_server_logged_in = 0;
 740
 741                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 742                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
 743                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
 744                 break;
 745
 746         /* case MBA_RIO_RESPONSE: */
 747         case MBA_ZIO_RESPONSE:
 748                 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
 749                     vha->host_no));
 750
 751                 if (IS_FWI2_CAPABLE(ha))
 752                         qla24xx_process_response_queue(vha, rsp);
 753                 else
 754                         qla2x00_process_response_queue(rsp);
 755                 break;
 756
 757         case MBA_DISCARD_RND_FRAME:
 758                 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
 759                     "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
 760                 break;
 761
 762         case MBA_TRACE_NOTIFICATION:
 763                 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
 764                 vha->host_no, mb[1], mb[2]));
 765                 break;
 766
 767         case MBA_ISP84XX_ALERT:
 768                 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
 769                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 770
 771                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
 772                 switch (mb[1]) {
 773                 case A84_PANIC_RECOVERY:
 774                         qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
 775                             "%04x %04x\n", mb[2], mb[3]);
 776                         break;
 777                 case A84_OP_LOGIN_COMPLETE:
 778                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
 779                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
 780                             "firmware version %x\n", ha->cs84xx->op_fw_version));
 781                         break;
 782                 case A84_DIAG_LOGIN_COMPLETE:
 783                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 784                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
 785                             "diagnostic firmware version %x\n",
 786                             ha->cs84xx->diag_fw_version));
 787                         break;
 788                 case A84_GOLD_LOGIN_COMPLETE:
 789                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 790                         ha->cs84xx->fw_update = 1;
 791                         DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
 792                             "firmware version %x\n",
 793                             ha->cs84xx->gold_fw_version));
 794                         break;
 795                 default:
 796                         qla_printk(KERN_ERR, ha,
 797                             "Alert 84xx: Invalid Alert %04x %04x %04x\n",
 798                             mb[1], mb[2], mb[3]);
 799                 }
 800                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
 801                 break;
 802         case MBA_DCBX_START:
 803                 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
 804                     vha->host_no, mb[1], mb[2], mb[3]));
 805                 break;
 806         case MBA_DCBX_PARAM_UPDATE:
 807                 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
 808                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 809                 break;
 810         case MBA_FCF_CONF_ERR:
 811                 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
 812                     "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
 813                 break;
 814         case MBA_IDC_COMPLETE:
 815         case MBA_IDC_NOTIFY:
 816         case MBA_IDC_TIME_EXT:
 817                 qla81xx_idc_event(vha, mb[0], mb[1]);
 818                 break;
 819         }
 820
 821         if (!vha->vp_idx && ha->num_vhosts)
 822                 qla2x00_alert_all_vps(rsp, mb);
 823 }
 824
 825 /**
 826  * qla2x00_process_completed_request() - Process a Fast Post response.
 827  * @ha: SCSI driver HA context
 828  * @index: SRB index
 829  */
 830 static void
 831 qla2x00_process_completed_request(struct scsi_qla_host *vha,
 832                                 struct req_que *req, uint32_t index)
 833 {
 834         srb_t *sp;
 835         struct qla_hw_data *ha = vha->hw;
 836
 837         /* Validate handle. */
 838         if (index >= MAX_OUTSTANDING_COMMANDS) {
 839                 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
 840                     vha->host_no, index));
 841                 qla_printk(KERN_WARNING, ha,
 842                     "Invalid SCSI completion handle %d.\n", index);
 843
 844                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 845                 return;
 846         }
 847
 848         sp = req->outstanding_cmds[index];
 849         if (sp) {
 850                 /* Free outstanding command slot. */
 851                 req->outstanding_cmds[index] = NULL;
 852
 853                 /* Save ISP completion status */
 854                 sp->cmd->result = DID_OK << 16;
 855                 qla2x00_sp_compl(ha, sp);
 856         } else {
 857                 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
 858                         " handle(0x%x)\n", vha->host_no, req->id, index));
 859                 qla_printk(KERN_WARNING, ha,
 860                     "Invalid ISP SCSI completion handle\n");
 861
 862                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 863         }
 864 }
 865
 866 static srb_t *
 867 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
 868     struct req_que *req, void *iocb)
 869 {
 870         struct qla_hw_data *ha = vha->hw;
 871         sts_entry_t *pkt = iocb;
 872         srb_t *sp = NULL;
 873         uint16_t index;
 874
 875         index = LSW(pkt->handle);
 876         if (index >= MAX_OUTSTANDING_COMMANDS) {
 877                 qla_printk(KERN_WARNING, ha,
 878                     "%s: Invalid completion handle (%x).\n", func, index);
 879                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 880                 goto done;
 881         }
 882         sp = req->outstanding_cmds[index];
 883         if (!sp) {
 884                 qla_printk(KERN_WARNING, ha,
 885                     "%s: Invalid completion handle (%x) -- timed-out.\n", func,
 886                     index);
 887                 return sp;
 888         }
 889         if (sp->handle != index) {
 890                 qla_printk(KERN_WARNING, ha,
 891                     "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
 892                     index);
 893                 return NULL;
 894         }
 895
 896         req->outstanding_cmds[index] = NULL;
 897
 898 done:
 899         return sp;
 900 }
 901
 902 static void
 903 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
 904     struct mbx_entry *mbx)
 905 {
 906         const char func[] = "MBX-IOCB";
 907         const char *type;
 908         fc_port_t *fcport;
 909         srb_t *sp;
 910         struct srb_iocb *lio;
 911         struct srb_ctx *ctx;
 912         uint16_t *data;
 913         uint16_t status;
 914
 915         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
 916         if (!sp)
 917                 return;
 918
 919         ctx = sp->ctx;
 920         lio = ctx->u.iocb_cmd;
 921         type = ctx->name;
 922         fcport = sp->fcport;
 923         data = lio->u.logio.data;
 924
 925         data[0] = MBS_COMMAND_ERROR;
 926         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
 927             QLA_LOGIO_LOGIN_RETRIED : 0;
 928         if (mbx->entry_status) {
 929                 DEBUG2(printk(KERN_WARNING
 930                     "scsi(%ld:%x): Async-%s error entry - portid=%02x%02x%02x "
 931                     "entry-status=%x status=%x state-flag=%x "
 932                     "status-flags=%x.\n",
 933                     fcport->vha->host_no, sp->handle, type,
 934                     fcport->d_id.b.domain, fcport->d_id.b.area,
 935                     fcport->d_id.b.al_pa, mbx->entry_status,
 936                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
 937                     le16_to_cpu(mbx->status_flags)));
 938
 939                 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
 940
 941                 goto logio_done;
 942         }
 943
 944         status = le16_to_cpu(mbx->status);
 945         if (status == 0x30 && ctx->type == SRB_LOGIN_CMD &&
 946             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
 947                 status = 0;
 948         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
 949                 DEBUG2(printk(KERN_DEBUG
 950                     "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
 951                     "mbx1=%x.\n",
 952                     fcport->vha->host_no, sp->handle, type,
 953                     fcport->d_id.b.domain, fcport->d_id.b.area,
 954                     fcport->d_id.b.al_pa, le16_to_cpu(mbx->mb1)));
 955
 956                 data[0] = MBS_COMMAND_COMPLETE;
 957                 if (ctx->type == SRB_LOGIN_CMD) {
 958                         fcport->port_type = FCT_TARGET;
 959                         if (le16_to_cpu(mbx->mb1) & BIT_0)
 960                                 fcport->port_type = FCT_INITIATOR;
 961                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
 962                                 fcport->flags |= FCF_FCP2_DEVICE;
 963                 }
 964                 goto logio_done;
 965         }
 966
 967         data[0] = le16_to_cpu(mbx->mb0);
 968         switch (data[0]) {
 969         case MBS_PORT_ID_USED:
 970                 data[1] = le16_to_cpu(mbx->mb1);
 971                 break;
 972         case MBS_LOOP_ID_USED:
 973                 break;
 974         default:
 975                 data[0] = MBS_COMMAND_ERROR;
 976                 break;
 977         }
 978
 979         DEBUG2(printk(KERN_WARNING
 980             "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x status=%x "
 981             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n",
 982             fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
 983             fcport->d_id.b.area, fcport->d_id.b.al_pa, status,
 984             le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
 985             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
 986             le16_to_cpu(mbx->mb7)));
 987
 988 logio_done:
 989         lio->done(sp);
 990 }
 991
 992 static void
 993 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
 994     sts_entry_t *pkt, int iocb_type)
 995 {
 996         const char func[] = "CT_IOCB";
 997         const char *type;
 998         struct qla_hw_data *ha = vha->hw;
 999         srb_t *sp;
1000         struct srb_ctx *sp_bsg;
1001         struct fc_bsg_job *bsg_job;
1002         uint16_t comp_status;
1003
1004         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1005         if (!sp)
1006                 return;
1007
1008         sp_bsg = sp->ctx;
1009         bsg_job = sp_bsg->u.bsg_job;
1010
1011         type = NULL;
1012         switch (sp_bsg->type) {
1013         case SRB_CT_CMD:
1014                 type = "ct pass-through";
1015                 break;
1016         default:
1017                 qla_printk(KERN_WARNING, ha,
1018                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1019                     sp_bsg->type);
1020                 return;
1021         }
1022
1023         comp_status = le16_to_cpu(pkt->comp_status);
1024
1025         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1026          * fc payload  to the caller
1027          */
1028         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1029         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1030
1031         if (comp_status != CS_COMPLETE) {
1032                 if (comp_status == CS_DATA_UNDERRUN) {
1033                         bsg_job->reply->result = DID_OK << 16;
1034                         bsg_job->reply->reply_payload_rcv_len =
1035                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1036
1037                         DEBUG2(qla_printk(KERN_WARNING, ha,
1038                             "scsi(%ld): CT pass-through-%s error "
1039                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1040                             vha->host_no, type, comp_status,
1041                             bsg_job->reply->reply_payload_rcv_len));
1042                 } else {
1043                         DEBUG2(qla_printk(KERN_WARNING, ha,
1044                             "scsi(%ld): CT pass-through-%s error "
1045                             "comp_status-status=0x%x.\n",
1046                             vha->host_no, type, comp_status));
1047                         bsg_job->reply->result = DID_ERROR << 16;
1048                         bsg_job->reply->reply_payload_rcv_len = 0;
1049                 }
1050                 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1051         } else {
1052                 bsg_job->reply->result =  DID_OK << 16;;
1053                 bsg_job->reply->reply_payload_rcv_len =
1054                     bsg_job->reply_payload.payload_len;
1055                 bsg_job->reply_len = 0;
1056         }
1057
1058         dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
1059             bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1060
1061         dma_unmap_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
1062             bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1063
1064         if (sp_bsg->type == SRB_ELS_CMD_HST || sp_bsg->type == SRB_CT_CMD)
1065                 kfree(sp->fcport);
1066
1067         kfree(sp->ctx);
1068         mempool_free(sp, ha->srb_mempool);
1069         bsg_job->job_done(bsg_job);
1070 }
1071
1072 static void
1073 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1074     struct sts_entry_24xx *pkt, int iocb_type)
1075 {
1076         const char func[] = "ELS_CT_IOCB";
1077         const char *type;
1078         struct qla_hw_data *ha = vha->hw;
1079         srb_t *sp;
1080         struct srb_ctx *sp_bsg;
1081         struct fc_bsg_job *bsg_job;
1082         uint16_t comp_status;
1083         uint32_t fw_status[3];
1084         uint8_t* fw_sts_ptr;
1085
1086         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1087         if (!sp)
1088                 return;
1089         sp_bsg = sp->ctx;
1090         bsg_job = sp_bsg->u.bsg_job;
1091
1092         type = NULL;
1093         switch (sp_bsg->type) {
1094         case SRB_ELS_CMD_RPT:
1095         case SRB_ELS_CMD_HST:
1096                 type = "els";
1097                 break;
1098         case SRB_CT_CMD:
1099                 type = "ct pass-through";
1100                 break;
1101         default:
1102                 qla_printk(KERN_WARNING, ha,
1103                     "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1104                     sp_bsg->type);
1105                 return;
1106         }
1107
1108         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1109         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1110         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1111
1112         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1113          * fc payload  to the caller
1114          */
1115         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1116         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1117
1118         if (comp_status != CS_COMPLETE) {
1119                 if (comp_status == CS_DATA_UNDERRUN) {
1120                         bsg_job->reply->result = DID_OK << 16;
1121                         bsg_job->reply->reply_payload_rcv_len =
1122                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);
1123
1124                         DEBUG2(qla_printk(KERN_WARNING, ha,
1125                             "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1126                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1127                                 vha->host_no, sp->handle, type, comp_status, fw_status[1], fw_status[2],
1128                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count)));
1129                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1130                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1131                 }
1132                 else {
1133                         DEBUG2(qla_printk(KERN_WARNING, ha,
1134                             "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1135                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1136                                 vha->host_no, sp->handle, type, comp_status,
1137                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1),
1138                                 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2)));
1139                         bsg_job->reply->result = DID_ERROR << 16;
1140                         bsg_job->reply->reply_payload_rcv_len = 0;
1141                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1142                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1143                 }
1144                 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1145         }
1146         else {
1147                 bsg_job->reply->result =  DID_OK << 16;;
1148                 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1149                 bsg_job->reply_len = 0;
1150         }
1151
1152         dma_unmap_sg(&ha->pdev->dev,
1153             bsg_job->request_payload.sg_list,
1154             bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1155         dma_unmap_sg(&ha->pdev->dev,
1156             bsg_job->reply_payload.sg_list,
1157             bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1158         if ((sp_bsg->type == SRB_ELS_CMD_HST) ||
1159             (sp_bsg->type == SRB_CT_CMD))
1160                 kfree(sp->fcport);
1161         kfree(sp->ctx);
1162         mempool_free(sp, ha->srb_mempool);
1163         bsg_job->job_done(bsg_job);
1164 }
1165
1166 static void
1167 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1168     struct logio_entry_24xx *logio)
1169 {
1170         const char func[] = "LOGIO-IOCB";
1171         const char *type;
1172         fc_port_t *fcport;
1173         srb_t *sp;
1174         struct srb_iocb *lio;
1175         struct srb_ctx *ctx;
1176         uint16_t *data;
1177         uint32_t iop[2];
1178
1179         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1180         if (!sp)
1181                 return;
1182
1183         ctx = sp->ctx;
1184         lio = ctx->u.iocb_cmd;
1185         type = ctx->name;
1186         fcport = sp->fcport;
1187         data = lio->u.logio.data;
1188
1189         data[0] = MBS_COMMAND_ERROR;
1190         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1191                 QLA_LOGIO_LOGIN_RETRIED : 0;
1192         if (logio->entry_status) {
1193                 DEBUG2(printk(KERN_WARNING
1194                     "scsi(%ld:%x): Async-%s error entry - "
1195                     "portid=%02x%02x%02x entry-status=%x.\n",
1196                     fcport->vha->host_no, sp->handle, type,
1197                     fcport->d_id.b.domain, fcport->d_id.b.area,
1198                     fcport->d_id.b.al_pa, logio->entry_status));
1199                 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1200
1201                 goto logio_done;
1202         }
1203
1204         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1205                 DEBUG2(printk(KERN_DEBUG
1206                     "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
1207                     "iop0=%x.\n",
1208                     fcport->vha->host_no, sp->handle, type,
1209                     fcport->d_id.b.domain, fcport->d_id.b.area,
1210                     fcport->d_id.b.al_pa,
1211                     le32_to_cpu(logio->io_parameter[0])));
1212
1213                 data[0] = MBS_COMMAND_COMPLETE;
1214                 if (ctx->type != SRB_LOGIN_CMD)
1215                         goto logio_done;
1216
1217                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1218                 if (iop[0] & BIT_4) {
1219                         fcport->port_type = FCT_TARGET;
1220                         if (iop[0] & BIT_8)
1221                                 fcport->flags |= FCF_FCP2_DEVICE;
1222                 } else if (iop[0] & BIT_5)
1223                         fcport->port_type = FCT_INITIATOR;
1224
1225                 if (logio->io_parameter[7] || logio->io_parameter[8])
1226                         fcport->supported_classes |= FC_COS_CLASS2;
1227                 if (logio->io_parameter[9] || logio->io_parameter[10])
1228                         fcport->supported_classes |= FC_COS_CLASS3;
1229
1230                 goto logio_done;
1231         }
1232
1233         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1234         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1235         switch (iop[0]) {
1236         case LSC_SCODE_PORTID_USED:
1237                 data[0] = MBS_PORT_ID_USED;
1238                 data[1] = LSW(iop[1]);
1239                 break;
1240         case LSC_SCODE_NPORT_USED:
1241                 data[0] = MBS_LOOP_ID_USED;
1242                 break;
1243         default:
1244                 data[0] = MBS_COMMAND_ERROR;
1245                 break;
1246         }
1247
1248         DEBUG2(printk(KERN_WARNING
1249             "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x comp=%x "
1250             "iop0=%x iop1=%x.\n",
1251             fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
1252             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1253             le16_to_cpu(logio->comp_status),
1254             le32_to_cpu(logio->io_parameter[0]),
1255             le32_to_cpu(logio->io_parameter[1])));
1256
1257 logio_done:
1258         lio->done(sp);
1259 }
1260
1261 static void
1262 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1263     struct tsk_mgmt_entry *tsk)
1264 {
1265         const char func[] = "TMF-IOCB";
1266         const char *type;
1267         fc_port_t *fcport;
1268         srb_t *sp;
1269         struct srb_iocb *iocb;
1270         struct srb_ctx *ctx;
1271         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1272         int error = 1;
1273
1274         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1275         if (!sp)
1276                 return;
1277
1278         ctx = sp->ctx;
1279         iocb = ctx->u.iocb_cmd;
1280         type = ctx->name;
1281         fcport = sp->fcport;
1282
1283         if (sts->entry_status) {
1284                 DEBUG2(printk(KERN_WARNING
1285                     "scsi(%ld:%x): Async-%s error - entry-status(%x).\n",
1286                     fcport->vha->host_no, sp->handle, type,
1287                     sts->entry_status));
1288         } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1289                 DEBUG2(printk(KERN_WARNING
1290                     "scsi(%ld:%x): Async-%s error - completion status(%x).\n",
1291                     fcport->vha->host_no, sp->handle, type,
1292                     sts->comp_status));
1293         } else if (!(le16_to_cpu(sts->scsi_status) &
1294             SS_RESPONSE_INFO_LEN_VALID)) {
1295                 DEBUG2(printk(KERN_WARNING
1296                     "scsi(%ld:%x): Async-%s error - no response info(%x).\n",
1297                     fcport->vha->host_no, sp->handle, type,
1298                     sts->scsi_status));
1299         } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1300                 DEBUG2(printk(KERN_WARNING
1301                     "scsi(%ld:%x): Async-%s error - not enough response(%d).\n",
1302                     fcport->vha->host_no, sp->handle, type,
1303                     sts->rsp_data_len));
1304         } else if (sts->data[3]) {
1305                 DEBUG2(printk(KERN_WARNING
1306                     "scsi(%ld:%x): Async-%s error - response(%x).\n",
1307                     fcport->vha->host_no, sp->handle, type,
1308                     sts->data[3]));
1309         } else {
1310                 error = 0;
1311         }
1312
1313         if (error) {
1314                 iocb->u.tmf.data = error;
1315                 DEBUG2(qla2x00_dump_buffer((uint8_t *)sts, sizeof(*sts)));
1316         }
1317
1318         iocb->done(sp);
1319 }
1320
1321 /**
1322  * qla2x00_process_response_queue() - Process response queue entries.
1323  * @ha: SCSI driver HA context
1324  */
1325 void
1326 qla2x00_process_response_queue(struct rsp_que *rsp)
1327 {
1328         struct scsi_qla_host *vha;
1329         struct qla_hw_data *ha = rsp->hw;
1330         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1331         sts_entry_t     *pkt;
1332         uint16_t        handle_cnt;
1333         uint16_t        cnt;
1334
1335         vha = pci_get_drvdata(ha->pdev);
1336
1337         if (!vha->flags.online)
1338                 return;
1339
1340         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1341                 pkt = (sts_entry_t *)rsp->ring_ptr;
1342
1343                 rsp->ring_index++;
1344                 if (rsp->ring_index == rsp->length) {
1345                         rsp->ring_index = 0;
1346                         rsp->ring_ptr = rsp->ring;
1347                 } else {
1348                         rsp->ring_ptr++;
1349                 }
1350
1351                 if (pkt->entry_status != 0) {
1352                         DEBUG3(printk(KERN_INFO
1353                             "scsi(%ld): Process error entry.\n", vha->host_no));
1354
1355                         qla2x00_error_entry(vha, rsp, pkt);
1356                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1357                         wmb();
1358                         continue;
1359                 }
1360
1361                 switch (pkt->entry_type) {
1362                 case STATUS_TYPE:
1363                         qla2x00_status_entry(vha, rsp, pkt);
1364                         break;
1365                 case STATUS_TYPE_21:
1366                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1367                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1368                                 qla2x00_process_completed_request(vha, rsp->req,
1369                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1370                         }
1371                         break;
1372                 case STATUS_TYPE_22:
1373                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1374                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1375                                 qla2x00_process_completed_request(vha, rsp->req,
1376                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1377                         }
1378                         break;
1379                 case STATUS_CONT_TYPE:
1380                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1381                         break;
1382                 case MBX_IOCB_TYPE:
1383                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1384                             (struct mbx_entry *)pkt);
1385                         break;
1386                 case CT_IOCB_TYPE:
1387                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1388                         break;
1389                 default:
1390                         /* Type Not Supported. */
1391                         DEBUG4(printk(KERN_WARNING
1392                             "scsi(%ld): Received unknown response pkt type %x "
1393                             "entry status=%x.\n",
1394                             vha->host_no, pkt->entry_type, pkt->entry_status));
1395                         break;
1396                 }
1397                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1398                 wmb();
1399         }
1400
1401         /* Adjust ring index */
1402         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1403 }
1404
1405 static inline void
1406
1407 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1408     uint32_t sense_len, struct rsp_que *rsp)
1409 {
1410         struct scsi_cmnd *cp = sp->cmd;
1411
1412         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1413                 sense_len = SCSI_SENSE_BUFFERSIZE;
1414
1415         sp->request_sense_length = sense_len;
1416         sp->request_sense_ptr = cp->sense_buffer;
1417         if (sp->request_sense_length > par_sense_len)
1418                 sense_len = par_sense_len;
1419
1420         memcpy(cp->sense_buffer, sense_data, sense_len);
1421
1422         sp->request_sense_ptr += sense_len;
1423         sp->request_sense_length -= sense_len;
1424         if (sp->request_sense_length != 0)
1425                 rsp->status_srb = sp;
1426
1427         DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1428             "cmd=%p\n", __func__, sp->fcport->vha->host_no,
1429             cp->device->channel, cp->device->id, cp->device->lun, cp));
1430         if (sense_len)
1431                 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1432 }
1433
1434 struct scsi_dif_tuple {
1435         __be16 guard;       /* Checksum */
1436         __be16 app_tag;         /* APPL identifer */
1437         __be32 ref_tag;         /* Target LBA or indirect LBA */
1438 };
1439
1440 /*
1441  * Checks the guard or meta-data for the type of error
1442  * detected by the HBA. In case of errors, we set the
1443  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1444  * to indicate to the kernel that the HBA detected error.
1445  */
1446 static inline void
1447 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1448 {
1449         struct scsi_cmnd *cmd = sp->cmd;
1450         struct scsi_dif_tuple   *ep =
1451                         (struct scsi_dif_tuple *)&sts24->data[20];
1452         struct scsi_dif_tuple   *ap =
1453                         (struct scsi_dif_tuple *)&sts24->data[12];
1454         uint32_t        e_ref_tag, a_ref_tag;
1455         uint16_t        e_app_tag, a_app_tag;
1456         uint16_t        e_guard, a_guard;
1457
1458         e_ref_tag = be32_to_cpu(ep->ref_tag);
1459         a_ref_tag = be32_to_cpu(ap->ref_tag);
1460         e_app_tag = be16_to_cpu(ep->app_tag);
1461         a_app_tag = be16_to_cpu(ap->app_tag);
1462         e_guard = be16_to_cpu(ep->guard);
1463         a_guard = be16_to_cpu(ap->guard);
1464
1465         DEBUG18(printk(KERN_DEBUG
1466             "%s(): iocb(s) %p Returned STATUS\n", __func__, sts24));
1467
1468         DEBUG18(printk(KERN_ERR "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1469             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1470             " tag=0x%x, act guard=0x%x, exp guard=0x%x\n",
1471             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1472             a_app_tag, e_app_tag, a_guard, e_guard));
1473
1474
1475         /* check guard */
1476         if (e_guard != a_guard) {
1477                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1478                     0x10, 0x1);
1479                 set_driver_byte(cmd, DRIVER_SENSE);
1480                 set_host_byte(cmd, DID_ABORT);
1481                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1482                 return;
1483         }
1484
1485         /* check appl tag */
1486         if (e_app_tag != a_app_tag) {
1487                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1488                     0x10, 0x2);
1489                 set_driver_byte(cmd, DRIVER_SENSE);
1490                 set_host_byte(cmd, DID_ABORT);
1491                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1492                 return;
1493         }
1494
1495         /* check ref tag */
1496         if (e_ref_tag != a_ref_tag) {
1497                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1498                     0x10, 0x3);
1499                 set_driver_byte(cmd, DRIVER_SENSE);
1500                 set_host_byte(cmd, DID_ABORT);
1501                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1502                 return;
1503         }
1504 }
1505
1506 /**
1507  * qla2x00_status_entry() - Process a Status IOCB entry.
1508  * @ha: SCSI driver HA context
1509  * @pkt: Entry pointer
1510  */
1511 static void
1512 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1513 {
1514         srb_t           *sp;
1515         fc_port_t       *fcport;
1516         struct scsi_cmnd *cp;
1517         sts_entry_t *sts;
1518         struct sts_entry_24xx *sts24;
1519         uint16_t        comp_status;
1520         uint16_t        scsi_status;
1521         uint16_t        ox_id;
1522         uint8_t         lscsi_status;
1523         int32_t         resid;
1524         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1525             fw_resid_len;
1526         uint8_t         *rsp_info, *sense_data;
1527         struct qla_hw_data *ha = vha->hw;
1528         uint32_t handle;
1529         uint16_t que;
1530         struct req_que *req;
1531         int logit = 1;
1532
1533         sts = (sts_entry_t *) pkt;
1534         sts24 = (struct sts_entry_24xx *) pkt;
1535         if (IS_FWI2_CAPABLE(ha)) {
1536                 comp_status = le16_to_cpu(sts24->comp_status);
1537                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1538         } else {
1539                 comp_status = le16_to_cpu(sts->comp_status);
1540                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1541         }
1542         handle = (uint32_t) LSW(sts->handle);
1543         que = MSW(sts->handle);
1544         req = ha->req_q_map[que];
1545
1546         /* Fast path completion. */
1547         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1548                 qla2x00_process_completed_request(vha, req, handle);
1549
1550                 return;
1551         }
1552
1553         /* Validate handle. */
1554         if (handle < MAX_OUTSTANDING_COMMANDS) {
1555                 sp = req->outstanding_cmds[handle];
1556                 req->outstanding_cmds[handle] = NULL;
1557         } else
1558                 sp = NULL;
1559
1560         if (sp == NULL) {
1561                 qla_printk(KERN_WARNING, ha,
1562                     "scsi(%ld): Invalid status handle (0x%x).\n", vha->host_no,
1563                     sts->handle);
1564
1565                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1566                 qla2xxx_wake_dpc(vha);
1567                 return;
1568         }
1569         cp = sp->cmd;
1570         if (cp == NULL) {
1571                 qla_printk(KERN_WARNING, ha,
1572                     "scsi(%ld): Command already returned (0x%x/%p).\n",
1573                     vha->host_no, sts->handle, sp);
1574
1575                 return;
1576         }
1577
1578         lscsi_status = scsi_status & STATUS_MASK;
1579
1580         fcport = sp->fcport;
1581
1582         ox_id = 0;
1583         sense_len = par_sense_len = rsp_info_len = resid_len =
1584             fw_resid_len = 0;
1585         if (IS_FWI2_CAPABLE(ha)) {
1586                 if (scsi_status & SS_SENSE_LEN_VALID)
1587                         sense_len = le32_to_cpu(sts24->sense_len);
1588                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1589                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1590                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1591                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
1592                 if (comp_status == CS_DATA_UNDERRUN)
1593                         fw_resid_len = le32_to_cpu(sts24->residual_len);
1594                 rsp_info = sts24->data;
1595                 sense_data = sts24->data;
1596                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1597                 ox_id = le16_to_cpu(sts24->ox_id);
1598                 par_sense_len = sizeof(sts24->data);
1599         } else {
1600                 if (scsi_status & SS_SENSE_LEN_VALID)
1601                         sense_len = le16_to_cpu(sts->req_sense_length);
1602                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1603                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1604                 resid_len = le32_to_cpu(sts->residual_length);
1605                 rsp_info = sts->rsp_info;
1606                 sense_data = sts->req_sense_data;
1607                 par_sense_len = sizeof(sts->req_sense_data);
1608         }
1609
1610         /* Check for any FCP transport errors. */
1611         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1612                 /* Sense data lies beyond any FCP RESPONSE data. */
1613                 if (IS_FWI2_CAPABLE(ha)) {
1614                         sense_data += rsp_info_len;
1615                         par_sense_len -= rsp_info_len;
1616                 }
1617                 if (rsp_info_len > 3 && rsp_info[3]) {
1618                         DEBUG2(qla_printk(KERN_INFO, ha,
1619                             "scsi(%ld:%d:%d): FCP I/O protocol failure "
1620                             "(0x%x/0x%x).\n", vha->host_no, cp->device->id,
1621                             cp->device->lun, rsp_info_len, rsp_info[3]));
1622
1623                         cp->result = DID_BUS_BUSY << 16;
1624                         goto out;
1625                 }
1626         }
1627
1628         /* Check for overrun. */
1629         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1630             scsi_status & SS_RESIDUAL_OVER)
1631                 comp_status = CS_DATA_OVERRUN;
1632
1633         /*
1634          * Based on Host and scsi status generate status code for Linux
1635          */
1636         switch (comp_status) {
1637         case CS_COMPLETE:
1638         case CS_QUEUE_FULL:
1639                 if (scsi_status == 0) {
1640                         cp->result = DID_OK << 16;
1641                         break;
1642                 }
1643                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1644                         resid = resid_len;
1645                         scsi_set_resid(cp, resid);
1646
1647                         if (!lscsi_status &&
1648                             ((unsigned)(scsi_bufflen(cp) - resid) <
1649                              cp->underflow)) {
1650                                 qla_printk(KERN_INFO, ha,
1651                                     "scsi(%ld:%d:%d): Mid-layer underflow "
1652                                     "detected (0x%x of 0x%x bytes).\n",
1653                                     vha->host_no, cp->device->id,
1654                                     cp->device->lun, resid, scsi_bufflen(cp));
1655
1656                                 cp->result = DID_ERROR << 16;
1657                                 break;
1658                         }
1659                 }
1660                 cp->result = DID_OK << 16 | lscsi_status;
1661
1662                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1663                         DEBUG2(qla_printk(KERN_INFO, ha,
1664                             "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1665                             vha->host_no, cp->device->id, cp->device->lun));
1666                         break;
1667                 }
1668                 logit = 0;
1669                 if (lscsi_status != SS_CHECK_CONDITION)
1670                         break;
1671
1672                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1673                 if (!(scsi_status & SS_SENSE_LEN_VALID))
1674                         break;
1675
1676                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
1677                     rsp);
1678                 break;
1679
1680         case CS_DATA_UNDERRUN:
1681                 /* Use F/W calculated residual length. */
1682                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1683                 scsi_set_resid(cp, resid);
1684                 if (scsi_status & SS_RESIDUAL_UNDER) {
1685                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1686                                 DEBUG2(qla_printk(KERN_INFO, ha,
1687                                     "scsi(%ld:%d:%d) Dropped frame(s) detected "
1688                                     "(0x%x of 0x%x bytes).\n", vha->host_no,
1689                                     cp->device->id, cp->device->lun, resid,
1690                                     scsi_bufflen(cp)));
1691
1692                                 cp->result = DID_ERROR << 16 | lscsi_status;
1693                                 break;
1694                         }
1695
1696                         if (!lscsi_status &&
1697                             ((unsigned)(scsi_bufflen(cp) - resid) <
1698                             cp->underflow)) {
1699                                 qla_printk(KERN_INFO, ha,
1700                                     "scsi(%ld:%d:%d): Mid-layer underflow "
1701                                     "detected (0x%x of 0x%x bytes).\n",
1702                                     vha->host_no, cp->device->id,
1703                                     cp->device->lun, resid, scsi_bufflen(cp));
1704
1705                                 cp->result = DID_ERROR << 16;
1706                                 break;
1707                         }
1708                 } else {
1709                         DEBUG2(qla_printk(KERN_INFO, ha,
1710                             "scsi(%ld:%d:%d) Dropped frame(s) detected (0x%x "
1711                             "of 0x%x bytes).\n", vha->host_no, cp->device->id,
1712                             cp->device->lun, resid, scsi_bufflen(cp)));
1713
1714                         cp->result = DID_ERROR << 16 | lscsi_status;
1715                         goto check_scsi_status;
1716                 }
1717
1718                 cp->result = DID_OK << 16 | lscsi_status;
1719                 logit = 0;
1720
1721 check_scsi_status:
1722                 /*
1723                  * Check to see if SCSI Status is non zero. If so report SCSI
1724                  * Status.
1725                  */
1726                 if (lscsi_status != 0) {
1727                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1728                                 DEBUG2(qla_printk(KERN_INFO, ha,
1729                                     "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1730                                     vha->host_no, cp->device->id,
1731                                     cp->device->lun));
1732                                 logit = 1;
1733                                 break;
1734                         }
1735                         if (lscsi_status != SS_CHECK_CONDITION)
1736                                 break;
1737
1738                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1739                         if (!(scsi_status & SS_SENSE_LEN_VALID))
1740                                 break;
1741
1742                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
1743                             sense_len, rsp);
1744                 }
1745                 break;
1746
1747         case CS_PORT_LOGGED_OUT:
1748         case CS_PORT_CONFIG_CHG:
1749         case CS_PORT_BUSY:
1750         case CS_INCOMPLETE:
1751         case CS_PORT_UNAVAILABLE:
1752         case CS_TIMEOUT:
1753         case CS_RESET:
1754
1755                 /*
1756                  * We are going to have the fc class block the rport
1757                  * while we try to recover so instruct the mid layer
1758                  * to requeue until the class decides how to handle this.
1759                  */
1760                 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1761
1762                 if (comp_status == CS_TIMEOUT) {
1763                         if (IS_FWI2_CAPABLE(ha))
1764                                 break;
1765                         else if ((le16_to_cpu(sts->status_flags) &
1766                             SF_LOGOUT_SENT) == 0)
1767                                 break;
1768                 }
1769
1770                 DEBUG2(qla_printk(KERN_INFO, ha,
1771                         "scsi(%ld:%d:%d) Port down status: port-state=0x%x\n",
1772                         vha->host_no, cp->device->id, cp->device->lun,
1773                         atomic_read(&fcport->state)));
1774
1775                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1776                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1777                 break;
1778
1779         case CS_ABORTED:
1780                 cp->result = DID_RESET << 16;
1781                 break;
1782
1783         case CS_DIF_ERROR:
1784                 qla2x00_handle_dif_error(sp, sts24);
1785                 break;
1786         default:
1787                 cp->result = DID_ERROR << 16;
1788                 break;
1789         }
1790
1791 out:
1792         if (logit)
1793                 DEBUG2(qla_printk(KERN_INFO, ha,
1794                     "scsi(%ld:%d:%d) FCP command status: 0x%x-0x%x (0x%x) "
1795                     "oxid=0x%x cdb=%02x%02x%02x len=0x%x "
1796                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x\n", vha->host_no,
1797                     cp->device->id, cp->device->lun, comp_status, scsi_status,
1798                     cp->result, ox_id, cp->cmnd[0],
1799                     cp->cmnd[1], cp->cmnd[2], scsi_bufflen(cp), rsp_info_len,
1800                     resid_len, fw_resid_len));
1801
1802         if (rsp->status_srb == NULL)
1803                 qla2x00_sp_compl(ha, sp);
1804 }
1805
1806 /**
1807  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1808  * @ha: SCSI driver HA context
1809  * @pkt: Entry pointer
1810  *
1811  * Extended sense data.
1812  */
1813 static void
1814 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1815 {
1816         uint8_t         sense_sz = 0;
1817         struct qla_hw_data *ha = rsp->hw;
1818         srb_t           *sp = rsp->status_srb;
1819         struct scsi_cmnd *cp;
1820
1821         if (sp != NULL && sp->request_sense_length != 0) {
1822                 cp = sp->cmd;
1823                 if (cp == NULL) {
1824                         DEBUG2(printk("%s(): Cmd already returned back to OS "
1825                             "sp=%p.\n", __func__, sp));
1826                         qla_printk(KERN_INFO, ha,
1827                             "cmd is NULL: already returned to OS (sp=%p)\n",
1828                             sp);
1829
1830                         rsp->status_srb = NULL;
1831                         return;
1832                 }
1833
1834                 if (sp->request_sense_length > sizeof(pkt->data)) {
1835                         sense_sz = sizeof(pkt->data);
1836                 } else {
1837                         sense_sz = sp->request_sense_length;
1838                 }
1839
1840                 /* Move sense data. */
1841                 if (IS_FWI2_CAPABLE(ha))
1842                         host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1843                 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1844                 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1845
1846                 sp->request_sense_ptr += sense_sz;
1847                 sp->request_sense_length -= sense_sz;
1848
1849                 /* Place command on done queue. */
1850                 if (sp->request_sense_length == 0) {
1851                         rsp->status_srb = NULL;
1852                         qla2x00_sp_compl(ha, sp);
1853                 }
1854         }
1855 }
1856
1857 /**
1858  * qla2x00_error_entry() - Process an error entry.
1859  * @ha: SCSI driver HA context
1860  * @pkt: Entry pointer
1861  */
1862 static void
1863 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1864 {
1865         srb_t *sp;
1866         struct qla_hw_data *ha = vha->hw;
1867         uint32_t handle = LSW(pkt->handle);
1868         uint16_t que = MSW(pkt->handle);
1869         struct req_que *req = ha->req_q_map[que];
1870 #if defined(QL_DEBUG_LEVEL_2)
1871         if (pkt->entry_status & RF_INV_E_ORDER)
1872                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1873         else if (pkt->entry_status & RF_INV_E_COUNT)
1874                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1875         else if (pkt->entry_status & RF_INV_E_PARAM)
1876                 qla_printk(KERN_ERR, ha,
1877                     "%s: Invalid Entry Parameter\n", __func__);
1878         else if (pkt->entry_status & RF_INV_E_TYPE)
1879                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1880         else if (pkt->entry_status & RF_BUSY)
1881                 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1882         else
1883                 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1884 #endif
1885
1886         /* Validate handle. */
1887         if (handle < MAX_OUTSTANDING_COMMANDS)
1888                 sp = req->outstanding_cmds[handle];
1889         else
1890                 sp = NULL;
1891
1892         if (sp) {
1893                 /* Free outstanding command slot. */
1894                 req->outstanding_cmds[handle] = NULL;
1895
1896                 /* Bad payload or header */
1897                 if (pkt->entry_status &
1898                     (RF_INV_E_ORDER | RF_INV_E_COUNT |
1899                      RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1900                         sp->cmd->result = DID_ERROR << 16;
1901                 } else if (pkt->entry_status & RF_BUSY) {
1902                         sp->cmd->result = DID_BUS_BUSY << 16;
1903                 } else {
1904                         sp->cmd->result = DID_ERROR << 16;
1905                 }
1906                 qla2x00_sp_compl(ha, sp);
1907
1908         } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1909             COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1910                 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1911                     vha->host_no));
1912                 qla_printk(KERN_WARNING, ha,
1913                     "Error entry - invalid handle\n");
1914
1915                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1916                 qla2xxx_wake_dpc(vha);
1917         }
1918 }
1919
1920 /**
1921  * qla24xx_mbx_completion() - Process mailbox command completions.
1922  * @ha: SCSI driver HA context
1923  * @mb0: Mailbox0 register
1924  */
1925 static void
1926 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1927 {
1928         uint16_t        cnt;
1929         uint16_t __iomem *wptr;
1930         struct qla_hw_data *ha = vha->hw;
1931         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1932
1933         /* Load return mailbox registers. */
1934         ha->flags.mbox_int = 1;
1935         ha->mailbox_out[0] = mb0;
1936         wptr = (uint16_t __iomem *)&reg->mailbox1;
1937
1938         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1939                 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1940                 wptr++;
1941         }
1942
1943         if (ha->mcp) {
1944                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1945                     __func__, vha->host_no, ha->mcp->mb[0]));
1946         } else {
1947                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1948                     __func__, vha->host_no));
1949         }
1950 }
1951
1952 /**
1953  * qla24xx_process_response_queue() - Process response queue entries.
1954  * @ha: SCSI driver HA context
1955  */
1956 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1957         struct rsp_que *rsp)
1958 {
1959         struct sts_entry_24xx *pkt;
1960         struct qla_hw_data *ha = vha->hw;
1961
1962         if (!vha->flags.online)
1963                 return;
1964
1965         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1966                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1967
1968                 rsp->ring_index++;
1969                 if (rsp->ring_index == rsp->length) {
1970                         rsp->ring_index = 0;
1971                         rsp->ring_ptr = rsp->ring;
1972                 } else {
1973                         rsp->ring_ptr++;
1974                 }
1975
1976                 if (pkt->entry_status != 0) {
1977                         DEBUG3(printk(KERN_INFO
1978                             "scsi(%ld): Process error entry.\n", vha->host_no));
1979
1980                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1981                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1982                         wmb();
1983                         continue;
1984                 }
1985
1986                 switch (pkt->entry_type) {
1987                 case STATUS_TYPE:
1988                         qla2x00_status_entry(vha, rsp, pkt);
1989                         break;
1990                 case STATUS_CONT_TYPE:
1991                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1992                         break;
1993                 case VP_RPT_ID_IOCB_TYPE:
1994                         qla24xx_report_id_acquisition(vha,
1995                             (struct vp_rpt_id_entry_24xx *)pkt);
1996                         break;
1997                 case LOGINOUT_PORT_IOCB_TYPE:
1998                         qla24xx_logio_entry(vha, rsp->req,
1999                             (struct logio_entry_24xx *)pkt);
2000                         break;
2001                 case TSK_MGMT_IOCB_TYPE:
2002                         qla24xx_tm_iocb_entry(vha, rsp->req,
2003                             (struct tsk_mgmt_entry *)pkt);
2004                         break;
2005                 case CT_IOCB_TYPE:
2006                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2007                         clear_bit(MBX_INTERRUPT, &vha->hw->mbx_cmd_flags);
2008                         break;
2009                 case ELS_IOCB_TYPE:
2010                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2011                         break;
2012                 default:
2013                         /* Type Not Supported. */
2014                         DEBUG4(printk(KERN_WARNING
2015                             "scsi(%ld): Received unknown response pkt type %x "
2016                             "entry status=%x.\n",
2017                             vha->host_no, pkt->entry_type, pkt->entry_status));
2018                         break;
2019                 }
2020                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2021                 wmb();
2022         }
2023
2024         /* Adjust ring index */
2025         if (IS_QLA82XX(ha)) {
2026                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2027                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2028         } else
2029                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2030 }
2031
2032 static void
2033 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2034 {
2035         int rval;
2036         uint32_t cnt;
2037         struct qla_hw_data *ha = vha->hw;
2038         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2039
2040         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
2041                 return;
2042
2043         rval = QLA_SUCCESS;
2044         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2045         RD_REG_DWORD(&reg->iobase_addr);
2046         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2047         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2048             rval == QLA_SUCCESS; cnt--) {
2049                 if (cnt) {
2050                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2051                         udelay(10);
2052                 } else
2053                         rval = QLA_FUNCTION_TIMEOUT;
2054         }
2055         if (rval == QLA_SUCCESS)
2056                 goto next_test;
2057
2058         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2059         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2060             rval == QLA_SUCCESS; cnt--) {
2061                 if (cnt) {
2062                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2063                         udelay(10);
2064                 } else
2065                         rval = QLA_FUNCTION_TIMEOUT;
2066         }
2067         if (rval != QLA_SUCCESS)
2068                 goto done;
2069
2070 next_test:
2071         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2072                 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
2073
2074 done:
2075         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2076         RD_REG_DWORD(&reg->iobase_window);
2077 }
2078
2079 /**
2080  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
2081  * @irq:
2082  * @dev_id: SCSI driver HA context
2083  *
2084  * Called by system whenever the host adapter generates an interrupt.
2085  *
2086  * Returns handled flag.
2087  */
2088 irqreturn_t
2089 qla24xx_intr_handler(int irq, void *dev_id)
2090 {
2091         scsi_qla_host_t *vha;
2092         struct qla_hw_data *ha;
2093         struct device_reg_24xx __iomem *reg;
2094         int             status;
2095         unsigned long   iter;
2096         uint32_t        stat;
2097         uint32_t        hccr;
2098         uint16_t        mb[4];
2099         struct rsp_que *rsp;
2100         unsigned long   flags;
2101
2102         rsp = (struct rsp_que *) dev_id;
2103         if (!rsp) {
2104                 printk(KERN_INFO
2105                     "%s(): NULL response queue pointer\n", __func__);
2106                 return IRQ_NONE;
2107         }
2108
2109         ha = rsp->hw;
2110         reg = &ha->iobase->isp24;
2111         status = 0;
2112
2113         if (unlikely(pci_channel_offline(ha->pdev)))
2114                 return IRQ_HANDLED;
2115
2116         spin_lock_irqsave(&ha->hardware_lock, flags);
2117         vha = pci_get_drvdata(ha->pdev);
2118         for (iter = 50; iter--; ) {
2119                 stat = RD_REG_DWORD(&reg->host_status);
2120                 if (stat & HSRX_RISC_PAUSED) {
2121                         if (unlikely(pci_channel_offline(ha->pdev)))
2122                                 break;
2123
2124                         hccr = RD_REG_DWORD(&reg->hccr);
2125
2126                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2127                             "Dumping firmware!\n", hccr);
2128
2129                         qla2xxx_check_risc_status(vha);
2130
2131                         ha->isp_ops->fw_dump(vha, 1);
2132                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2133                         break;
2134                 } else if ((stat & HSRX_RISC_INT) == 0)
2135                         break;
2136
2137                 switch (stat & 0xff) {
2138                 case 0x1:
2139                 case 0x2:
2140                 case 0x10:
2141                 case 0x11:
2142                         qla24xx_mbx_completion(vha, MSW(stat));
2143                         status |= MBX_INTERRUPT;
2144
2145                         break;
2146                 case 0x12:
2147                         mb[0] = MSW(stat);
2148                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2149                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2150                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2151                         qla2x00_async_event(vha, rsp, mb);
2152                         break;
2153                 case 0x13:
2154                 case 0x14:
2155                         qla24xx_process_response_queue(vha, rsp);
2156                         break;
2157                 default:
2158                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2159                             "(%d).\n",
2160                             vha->host_no, stat & 0xff));
2161                         break;
2162                 }
2163                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2164                 RD_REG_DWORD_RELAXED(&reg->hccr);
2165         }
2166         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2167
2168         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2169             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2170                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2171                 complete(&ha->mbx_intr_comp);
2172         }
2173
2174         return IRQ_HANDLED;
2175 }
2176
2177 static irqreturn_t
2178 qla24xx_msix_rsp_q(int irq, void *dev_id)
2179 {
2180         struct qla_hw_data *ha;
2181         struct rsp_que *rsp;
2182         struct device_reg_24xx __iomem *reg;
2183         struct scsi_qla_host *vha;
2184         unsigned long flags;
2185
2186         rsp = (struct rsp_que *) dev_id;
2187         if (!rsp) {
2188                 printk(KERN_INFO
2189                 "%s(): NULL response queue pointer\n", __func__);
2190                 return IRQ_NONE;
2191         }
2192         ha = rsp->hw;
2193         reg = &ha->iobase->isp24;
2194
2195         spin_lock_irqsave(&ha->hardware_lock, flags);
2196
2197         vha = pci_get_drvdata(ha->pdev);
2198         qla24xx_process_response_queue(vha, rsp);
2199         if (!ha->flags.disable_msix_handshake) {
2200                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2201                 RD_REG_DWORD_RELAXED(&reg->hccr);
2202         }
2203         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2204
2205         return IRQ_HANDLED;
2206 }
2207
2208 static irqreturn_t
2209 qla25xx_msix_rsp_q(int irq, void *dev_id)
2210 {
2211         struct qla_hw_data *ha;
2212         struct rsp_que *rsp;
2213         struct device_reg_24xx __iomem *reg;
2214         unsigned long flags;
2215
2216         rsp = (struct rsp_que *) dev_id;
2217         if (!rsp) {
2218                 printk(KERN_INFO
2219                         "%s(): NULL response queue pointer\n", __func__);
2220                 return IRQ_NONE;
2221         }
2222         ha = rsp->hw;
2223
2224         /* Clear the interrupt, if enabled, for this response queue */
2225         if (rsp->options & ~BIT_6) {
2226                 reg = &ha->iobase->isp24;
2227                 spin_lock_irqsave(&ha->hardware_lock, flags);
2228                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2229                 RD_REG_DWORD_RELAXED(&reg->hccr);
2230                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2231         }
2232         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2233
2234         return IRQ_HANDLED;
2235 }
2236
2237 static irqreturn_t
2238 qla24xx_msix_default(int irq, void *dev_id)
2239 {
2240         scsi_qla_host_t *vha;
2241         struct qla_hw_data *ha;
2242         struct rsp_que *rsp;
2243         struct device_reg_24xx __iomem *reg;
2244         int             status;
2245         uint32_t        stat;
2246         uint32_t        hccr;
2247         uint16_t        mb[4];
2248         unsigned long flags;
2249
2250         rsp = (struct rsp_que *) dev_id;
2251         if (!rsp) {
2252                 DEBUG(printk(
2253                 "%s(): NULL response queue pointer\n", __func__));
2254                 return IRQ_NONE;
2255         }
2256         ha = rsp->hw;
2257         reg = &ha->iobase->isp24;
2258         status = 0;
2259
2260         spin_lock_irqsave(&ha->hardware_lock, flags);
2261         vha = pci_get_drvdata(ha->pdev);
2262         do {
2263                 stat = RD_REG_DWORD(&reg->host_status);
2264                 if (stat & HSRX_RISC_PAUSED) {
2265                         if (unlikely(pci_channel_offline(ha->pdev)))
2266                                 break;
2267
2268                         hccr = RD_REG_DWORD(&reg->hccr);
2269
2270                         qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2271                             "Dumping firmware!\n", hccr);
2272
2273                         qla2xxx_check_risc_status(vha);
2274
2275                         ha->isp_ops->fw_dump(vha, 1);
2276                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2277                         break;
2278                 } else if ((stat & HSRX_RISC_INT) == 0)
2279                         break;
2280
2281                 switch (stat & 0xff) {
2282                 case 0x1:
2283                 case 0x2:
2284                 case 0x10:
2285                 case 0x11:
2286                         qla24xx_mbx_completion(vha, MSW(stat));
2287                         status |= MBX_INTERRUPT;
2288
2289                         break;
2290                 case 0x12:
2291                         mb[0] = MSW(stat);
2292                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2293                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2294                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2295                         qla2x00_async_event(vha, rsp, mb);
2296                         break;
2297                 case 0x13:
2298                 case 0x14:
2299                         qla24xx_process_response_queue(vha, rsp);
2300                         break;
2301                 default:
2302                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2303                             "(%d).\n",
2304                             vha->host_no, stat & 0xff));
2305                         break;
2306                 }
2307                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2308         } while (0);
2309         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2310
2311         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2312             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2313                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2314                 complete(&ha->mbx_intr_comp);
2315         }
2316         return IRQ_HANDLED;
2317 }
2318
2319 /* Interrupt handling helpers. */
2320
2321 struct qla_init_msix_entry {
2322         const char *name;
2323         irq_handler_t handler;
2324 };
2325
2326 static struct qla_init_msix_entry msix_entries[3] = {
2327         { "qla2xxx (default)", qla24xx_msix_default },
2328         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2329         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2330 };
2331
2332 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2333         { "qla2xxx (default)", qla82xx_msix_default },
2334         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2335 };
2336
2337 static void
2338 qla24xx_disable_msix(struct qla_hw_data *ha)
2339 {
2340         int i;
2341         struct qla_msix_entry *qentry;
2342
2343         for (i = 0; i < ha->msix_count; i++) {
2344                 qentry = &ha->msix_entries[i];
2345                 if (qentry->have_irq)
2346                         free_irq(qentry->vector, qentry->rsp);
2347         }
2348         pci_disable_msix(ha->pdev);
2349         kfree(ha->msix_entries);
2350         ha->msix_entries = NULL;
2351         ha->flags.msix_enabled = 0;
2352 }
2353
2354 static int
2355 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2356 {
2357 #define MIN_MSIX_COUNT  2
2358         int i, ret;
2359         struct msix_entry *entries;
2360         struct qla_msix_entry *qentry;
2361
2362         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2363                         GFP_KERNEL);
2364         if (!entries)
2365                 return -ENOMEM;
2366
2367         for (i = 0; i < ha->msix_count; i++)
2368                 entries[i].entry = i;
2369
2370         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2371         if (ret) {
2372                 if (ret < MIN_MSIX_COUNT)
2373                         goto msix_failed;
2374
2375                 qla_printk(KERN_WARNING, ha,
2376                         "MSI-X: Failed to enable support -- %d/%d\n"
2377                         " Retry with %d vectors\n", ha->msix_count, ret, ret);
2378                 ha->msix_count = ret;
2379                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2380                 if (ret) {
2381 msix_failed:
2382                         qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2383                                 " support, giving up -- %d/%d\n",
2384                                 ha->msix_count, ret);
2385                         goto msix_out;
2386                 }
2387                 ha->max_rsp_queues = ha->msix_count - 1;
2388         }
2389         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2390                                 ha->msix_count, GFP_KERNEL);
2391         if (!ha->msix_entries) {
2392                 ret = -ENOMEM;
2393                 goto msix_out;
2394         }
2395         ha->flags.msix_enabled = 1;
2396
2397         for (i = 0; i < ha->msix_count; i++) {
2398                 qentry = &ha->msix_entries[i];
2399                 qentry->vector = entries[i].vector;
2400                 qentry->entry = entries[i].entry;
2401                 qentry->have_irq = 0;
2402                 qentry->rsp = NULL;
2403         }
2404
2405         /* Enable MSI-X vectors for the base queue */
2406         for (i = 0; i < 2; i++) {
2407                 qentry = &ha->msix_entries[i];
2408                 if (IS_QLA82XX(ha)) {
2409                         ret = request_irq(qentry->vector,
2410                                 qla82xx_msix_entries[i].handler,
2411                                 0, qla82xx_msix_entries[i].name, rsp);
2412                 } else {
2413                         ret = request_irq(qentry->vector,
2414                                 msix_entries[i].handler,
2415                                 0, msix_entries[i].name, rsp);
2416                 }
2417                 if (ret) {
2418                         qla_printk(KERN_WARNING, ha,
2419                         "MSI-X: Unable to register handler -- %x/%d.\n",
2420                         qentry->vector, ret);
2421                         qla24xx_disable_msix(ha);
2422                         ha->mqenable = 0;
2423                         goto msix_out;
2424                 }
2425                 qentry->have_irq = 1;
2426                 qentry->rsp = rsp;
2427                 rsp->msix = qentry;
2428         }
2429
2430         /* Enable MSI-X vector for response queue update for queue 0 */
2431         if (ha->mqiobase &&  (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2432                 ha->mqenable = 1;
2433
2434 msix_out:
2435         kfree(entries);
2436         return ret;
2437 }
2438
2439 int
2440 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2441 {
2442         int ret;
2443         device_reg_t __iomem *reg = ha->iobase;
2444
2445         /* If possible, enable MSI-X. */
2446         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2447                 !IS_QLA8432(ha) && !IS_QLA8XXX_TYPE(ha))
2448                 goto skip_msi;
2449
2450         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2451                 (ha->pdev->subsystem_device == 0x7040 ||
2452                 ha->pdev->subsystem_device == 0x7041 ||
2453                 ha->pdev->subsystem_device == 0x1705)) {
2454                 DEBUG2(qla_printk(KERN_WARNING, ha,
2455                         "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X,0x%X).\n",
2456                         ha->pdev->subsystem_vendor,
2457                         ha->pdev->subsystem_device));
2458                 goto skip_msi;
2459         }
2460
2461         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2462                 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2463                 DEBUG2(qla_printk(KERN_WARNING, ha,
2464                 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2465                         ha->pdev->revision, ha->fw_attributes));
2466                 goto skip_msix;
2467         }
2468
2469         ret = qla24xx_enable_msix(ha, rsp);
2470         if (!ret) {
2471                 DEBUG2(qla_printk(KERN_INFO, ha,
2472                     "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2473                     ha->fw_attributes));
2474                 goto clear_risc_ints;
2475         }
2476         qla_printk(KERN_WARNING, ha,
2477             "MSI-X: Falling back-to MSI mode -- %d.\n", ret);
2478 skip_msix:
2479
2480         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2481             !IS_QLA8001(ha))
2482                 goto skip_msi;
2483
2484         ret = pci_enable_msi(ha->pdev);
2485         if (!ret) {
2486                 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2487                 ha->flags.msi_enabled = 1;
2488         } else
2489                 qla_printk(KERN_WARNING, ha,
2490                     "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2491 skip_msi:
2492
2493         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2494             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2495             QLA2XXX_DRIVER_NAME, rsp);
2496         if (ret) {
2497                 qla_printk(KERN_WARNING, ha,
2498                     "Failed to reserve interrupt %d already in use.\n",
2499                     ha->pdev->irq);
2500                 goto fail;
2501         }
2502
2503 clear_risc_ints:
2504
2505         /*
2506          * FIXME: Noted that 8014s were being dropped during NK testing.
2507          * Timing deltas during MSI-X/INTa transitions?
2508          */
2509         if (IS_QLA81XX(ha) || IS_QLA82XX(ha))
2510                 goto fail;
2511         spin_lock_irq(&ha->hardware_lock);
2512         if (IS_FWI2_CAPABLE(ha)) {
2513                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2514                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2515         } else {
2516                 WRT_REG_WORD(&reg->isp.semaphore, 0);
2517                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2518                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2519         }
2520         spin_unlock_irq(&ha->hardware_lock);
2521
2522 fail:
2523         return ret;
2524 }
2525
2526 void
2527 qla2x00_free_irqs(scsi_qla_host_t *vha)
2528 {
2529         struct qla_hw_data *ha = vha->hw;
2530         struct rsp_que *rsp = ha->rsp_q_map[0];
2531
2532         if (ha->flags.msix_enabled)
2533                 qla24xx_disable_msix(ha);
2534         else if (ha->flags.msi_enabled) {
2535                 free_irq(ha->pdev->irq, rsp);
2536                 pci_disable_msi(ha->pdev);
2537         } else
2538                 free_irq(ha->pdev->irq, rsp);
2539 }
2540
2541
2542 int qla25xx_request_irq(struct rsp_que *rsp)
2543 {
2544         struct qla_hw_data *ha = rsp->hw;
2545         struct qla_init_msix_entry *intr = &msix_entries[2];
2546         struct qla_msix_entry *msix = rsp->msix;
2547         int ret;
2548
2549         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2550         if (ret) {
2551                 qla_printk(KERN_WARNING, ha,
2552                         "MSI-X: Unable to register handler -- %x/%d.\n",
2553                         msix->vector, ret);
2554                 return ret;
2555         }
2556         msix->have_irq = 1;
2557         msix->rsp = rsp;
2558         return ret;
2559 }